Aeronautical Information Manual (AIM), page 595

Index   594 -- Page 595 -- 596

FIG 10-2-9
EMS Multiple Helicopter LZ/Heliport Operation

If the LZ/hospital heliport weather conditions or airspace altitude restrictions prohibit the recommended vertical
separation, 1 NM separations should be kept between helicopter orbit areas.

Special Operations 10-2-17

Page 595 of the Aeronautical Information Manual (AIM.pdf)
AIM: Official Guide to Basic Flight Information and ATC Procedures

Index   594 -- Page 595 -- 596